Труды сотрудников ИЛ им. В.Н. Сукачева СО РАН

[Текст] = Anatomical characteristics of wood at various heights in the stems of gmelin larch trees growing in the upper treeline ecotone (Taymyr) : материалы временных коллективов / В. В. Симанько // Исследование компонентов лесных экосистем Сибири: Материалы конференции молодых ученых, 5-6 апреля 2012 г. , Красноярск. - Красноярск : Институт леса им. В.Н. Сукачева СО РАН , 2012. - Вып. 13. - С. 47-50. - Библиогр. в конце ст.
Аннотация: Larch trees growing at the places in the upper border "open larch stand - tundra" and the upper border closed forest - open forest situated at the upper tree-line ecotone, were under study. Anatomical structure of tree rings at various stem heights, were investigatted. Better hydrothermal conditions in upper border of the "open larch stand - tundra" facilitate the formation of hinger number of cells and larder radial cell size in trees in comparison with those in the closed stand. These differences are related to adaptation of larch conducting tissue to correspond hydrothermal soil conditions.

Держатели документа:
Институт леса им. В.Н. Сукачева Сибирского отделения Российской академии наук : 660036, Красноярск, Академгородок, 50/28

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Siman'ko Valentina Vital'yevna

[Text] / V. I. Kharuk [et al.] // Glob. Ecol. Biogeogr. - 2010. - Vol. 19, Is. 6. - P822-830, DOI 10.1111/j.1466-8238.2010.00555.x. - Cited References: 33. - This research was supported by the NASA Science Mission Directorate, Terrestrial Ecology Program, the Siberian Branch Russian Academy of Science Program no. 23.3.33, and grant no. MK-2497.2009.5. Thanks to Joanne Howl for edits of the manuscript. . - 9. - ISSN 1466-822XРУБ Ecology + Geography, Physical

Аннотация: Aim To evaluate the hypothesis that topographic features of high-elevation mountain environments govern spatial distribution and climate-driven dynamics of the forest. Location Upper mountain forest stands (elevation range 1800-2600 m) in the mountains of southern Siberia. Methods Archive maps, satellite and on-ground data from1960 to 2002 were used. Data were normalized to avoid bias caused by uneven distribution of topographic features (elevation, azimuth and slope steepness) within the analysed area. Spatial distribution of forest stands was analysed with respect to topography based on a digital elevation model (DEM). Results Spatial patterns in mountain forests are anisotropic with respect to azimuth, slope steepness and elevation. At a given elevation, the majority of forests occupied slopes with greater than mean slope values. As the elevation increased, forests shifted to steeper slopes. The orientation of forest azimuth distribution changed clockwise with increase in elevation (the total shift was 120 degrees), indicating a combined effect of wind and water stress on the observed forest patterns. Warming caused changes in the forest distribution patterns during the last four decades. The area of closed forests increased 1.5 times, which was attributed to increased stand density and tree migration. The migration rate was 1.5 +/- 0.9 m year-1, causing a mean forest line shift of 63 +/- 37 m. Along with upward migration, downward tree migration onto hill slopes was observed. Changes in tree morphology were also noted as widespread transformation of the prostrate forms of Siberian pine and larch into erect forms. Main conclusions The spatial pattern of upper mountain forests as well as the response of forests to warming strongly depends on topographic relief features (elevation, azimuth and slope steepness). With elevation increase (and thus a harsher environment) forests shifted to steep wind-protected slopes. A considerable increase in the stand area and increased elevation of the upper forest line was observed coincident with the climate warming that was observed. Warming promotes migration of trees to areas that are less protected from winter desiccation and snow abrasion (i.e. areas with lower values of slope steepness). Climate-induced forest response has significantly modified the spatial patterns of high-elevation forests in southern Siberia during the last four decades, as well as tree morphology.

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[Kharuk, Vyacheslav I.
Im, Sergey T.] Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia
[Ranson, Kenneth J.] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA
[Vdovin, Alexander S.] Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Kharuk, V.I.; Ranson, K.J.; Im, S.T.; Vdovin, A.S.

[Text] / A. J. Soja [et al.] // Glob. Planet. Change. - 2007. - Vol. 56: 1st Science Session of the Northern-Eurasia-Earth-Science-Partnership-Initiative (NEESPI) held at the 2004 Fall AGU Meeting (DEC 13-17, 2004, San Francisco, CA), Is. 03.04.2013. - P274-296, DOI 10.1016/j.gloplacha.2006.07.028. - Cited References: 167 . - 23. - ISSN 0921-8181РУБ Geography, Physical + Geosciences, Multidisciplinary

Аннотация: For about three decades, there have been many predictions of the potential ecological response in boreal regions to the currently warmer conditions. In essence, a widespread, naturally occurring experiment has been conducted over time. In this paper, we describe previously modeled predictions of ecological change in boreal Alaska, Canada and Russia, and then we investigate potential evidence of current climate-induced change. For instance, ecological models have suggested that warming will induce the northern and upslope migration of the treeline and an alteration in the current mosaic structure of boreal forests. We present evidence of the migration of keystone ecosystems in the upland and lowland treeline of mountainous regions across southern Siberia. Ecological models have also predicted a moisture-stress-related dieback in white spruce trees in Alaska, and current investigations show that as temperatures increase, white spruce tree growth is declining. Additionally, it was suggested that increases in infestation and wildfire disturbance would be catalysts that precipitate the alteration of the current mosaic forest composition. In Siberia, 7 of the last 9 yr have resulted in extreme fire seasons, and extreme fire years have also been more frequent in both Alaska and Canada. In addition, Alaska has experienced extreme and geographically expansive multi-year outbreaks of the spruce beetle, which had been previously limited by the cold, moist environment. We suggest that there is substantial evidence throughout the circumboreal region to conclude that the biosphere within the boreal terrestrial environment has already responded to the transient effects of climate change. Additionally, temperature increases and warming-induced change are progressing faster than had been predicted in some regions, suggesting a potential non-linear rapid response to changes in climate, as opposed to the predicted slow linear response to climate change. (C) 2006 Elsevier B.V. All rights reserved.

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NASA, Langley Res Ctr, Natl Inst Aerosp, Hampton, VA 23681 USA
Russian Acad Sci, Sukachev Inst Forestry, Krasnoyarsk 660036, Russia
Altarum Inst, Ann Arbor, MI 48113 USA
Canadian Forest Serv, Sault Ste Marie, ON P6A 2E5, Canada
Univ Virginia, Global Environm Change Program, Charlottesville, VA 22903 USA
Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA
NASA, Langley Res Ctr, Hampton, VA 23681 USA

Доп.точки доступа:
Soja, A.J.; Tchebakova, N.M.; French, NHF; Flannigan, M.D.; Shugart, H.H.; Stocks, B.J.; Sukhinin, A.I.; Parfenova, E.I.; Chapin, F.S.; Stackhouse, P.W.

[Text] / M. . Slot [et al.] // Tree Physiol. - 2005. - Vol. 25, Is. 9. - P1139-1150. - Cited References: 37 . - 12. - ISSN 0829-318XРУБ Forestry

Аннотация: Regeneration patterns of Pinus sylvestris L. juveniles in central Siberian glades were studied in relation to cold-induced photoinhibition. Spatial distribution of seedlings in different height classes revealed higher seedling densities beneath the canopy than beyond the canopy, and significantly higher densities of seedlings < 50 cm tall on the north side of the trees. These patterns coincided with differences in light conditions. Compared with plants on the north side of canopy trees (north-exposed), photosynthetic photon flux (PPF) received by plants on the south side of canopy trees (south-exposed) was always higher, making south-exposed plants more susceptible to photoinhibition, especially on cool mornings. Chlorophyll fluorescence data revealed lower photochemical efficiency and increased non-photochemical quenching of small (20-50 cm in height), south-exposed seedlings from spring to early autumn, indicating increased excitation pressure on photosynthesis. Maximum rate of oxygen evolution was less in south-exposed plants than in north-exposed plants. Increased pools of xanthophyll cycle pigments and formation of the photoprotective zeaxanthin provided further evidence for the higher susceptibility to photoinhibition of south-exposed seedlings. A linear mixed model analysis explained many of the physiological differences observed in seedlings according to height class and aspect with early morning temperature and PPF as predictors. The link between photoinhibition and differential distribution of seedlings by height class suggests that photoinhibition, together with other environmental stresses, decreases the survival of small, south-exposed P sylvestris seedlings, thereby significantly affecting the regeneration pattern of central Siberian pine glades.

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Univ Wageningen & Res Ctr, Forest Ecol & Forest Management Grp, NL-6700 AH Wageningen, Netherlands
Princeton Univ, Dept Ecol & Evolutionary Biol, Princeton, NJ 08544 USA
Russian Acad Sci, Inst Forest, Siberian Branch, Krasnoyarsk 660036, Russia
Max Planck Inst Biogeochem, D-07745 Jena, Germany

Доп.точки доступа:
Slot, M...; Wirth, C...; Schumacher, J...; Mohren, GMJ; Shibistova, O...; Lloyd, J...; Ensminger, I...

/ V. S. Myglan [et al.] // Archaeology, Ethnology and Anthropology of Eurasia. - 2008. - Vol. 36, Is. 4. - P25-31, DOI 10.1016/j.aeae.2009.03.003 . - ISSN 1563-0110
Аннотация: The current paper presents a new 1929-year tree-ring chronology for the Altai-Sayan region (Western Tuva) based on analyses of wood material from living trees and trunk remains of Siberian larch (Larix sibirica Ldb) from the upper treeline (2400 m asl). The correlations between tree-ring indices and meteorological data suggest that maximum effect on radial growth is produced by temperatures in June and July. This makes it possible to use the resulting chronology for early summer temperature reconstructions in the Altai-Sayan region. In respect to archaeology, a chronology of this length provides the opportunity of dating ancient wood samples, i.e. for exact definition of the calendar dates of the archaeological objects in the relevant territory over the entire period of the chronology. В© 2009.

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Держатели документа:
Siberian Federal University, Svobodny Pr. 79, Krasnoyarsk, 660041, Russian Federation
Tuvan State University, Lenina 36, Kyzyl, Russian Federation
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Myglan, V.S.; Oidupaa, O.C.; Kirdyanov, A.V.; Vaganov, E.A.

/ A. V. Kirdyanov [et al.] // Boreas. - 2012. - Vol. 41, Is. 1. - P56-67, DOI 10.1111/j.1502-3885.2011.00214.x . - ISSN 0300-9483
Аннотация: Ongoing climatic changes potentially affect tree-line ecosystems, but in many regions the observed changes are superimposed by human activities. We assessed how the forest-tundra ecotone has changed during the last century in the Putorana Mountains, northern Siberia, an extremely remote and untouched area in Eurasia. A space-for-time approach was used to determine the spatio-temporal dynamics of forest structure and biomass along an altitudinal transect. From the closed larch forest to the upper tree line, the mean age of Larix gmelinii (Rupr.) decreased considerably from 220 to 50 years ago. At the current upper species line, there is a strong and successful germination of larch, with 1500 saplings per hectare, indicating an ongoing filling-in, a densification of a formerly open forest and an upslope shift of the tree-line position (approximately 30 to 50m in altitude during the last century). The forest expansion coincided with large increases in winter precipitation during the 20th century. In contrast, tree growth rates were significantly positively related to summer temperatures, neither of which increased markedly. The total aboveground biomass decreased from approximately 40tha -1 in the closed larch forest to 5tha -1 at the tree line. Our study demonstrates that ongoing climatic changes lead to an upslope expansion of forests in the remote Putorana Mountains, which alters the stand structure and productivity of the forest-tundra ecotone. These vegetation changes are very probably of minor importance for aboveground carbon sequestration, but soil carbon data are needed to estimate the impact of the forest expansion on the total ecosystem carbon storage. В© 2011 The Authors. Boreas В© 2011 The Boreas Collegium.

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Держатели документа:
V. N. Sukachev Institute of Forest SB RAS, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Swiss Federal Research Institute WSL, Zurcherstrasse 111, CH-8903 Birmensdorf, Switzerland
Siberian Federal University, pr. Svobodny 79, Krasnoyarsk, 660041, Russian Federation
Institute of Plant and Animal Ecology UrB RAS, 8 Marta str. 202, Ekaterinburg, 620144, Russian Federation

Доп.точки доступа:
Kirdyanov, A.V.; Hagedorn, F.; Knorre, A.A.; Fedotova, E.V.; Vaganov, E.A.; Naurzbaev, M.M.; Moiseev, P.A.; Rigling, A.

/ V. S. Myglan [et al.] // Geogr. Nat. Resour. - 2012. - Vol. 33, Is. 3. - P200-207, DOI 10.1134/S1875372812030031 . - ISSN 1875-3728
Аннотация: We have constructed and analyzed the 1896-year-long tree-ring chronology for the territory of the Altai Republic. The chronology was based on wood of live trees and remains of trunks of Siberian larch (Larix sibirica Ledeb.) from the upper timberline (2300 m) of the Dzhelo river valley. The chronology agrees well with palaeoclimatic data and reflects the main climatic changes in the northern hemisphere for the last two millennia: an extraordinary decrease in increment after the year 536, "mean secular warming", the "Little Ice Age", and current warming. By calculating the response function between the tree-ring chronology for the Dzhelo and data from weather stations, it was possible to reconstruct the series of June-July air temperature variability for the last 1500 years. The chronology can be used in dating archaeological wood, i. e. in determining the calendar time at which archaeological monuments were constructed. В© 2012 Pleiades Publishing, Ltd.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Altai State University, Barnaul, Russian Federation
Paul Scherrer Institute, Villigen, Switzerland

Доп.точки доступа:
Myglan, V.S.; Zharnikova, O.A.; Malysheva, N.V.; Gerasimova, O.V.; Vaganov, E.A.; Sidorov, O.V.

/ V. S. Myglan, O. Ch. Oidupaa, E. A. Vaganov // Archaeol. Ethnol. Anthropol. Eurasia. - 2012. - Vol. 40, Is. 3. - P76-83, DOI 10.1016/j.aeae.2012.11.009 . - ISSN 1563-0110
Аннотация: Wood material from living trees and trunk remains of Siberian larch (Larix sibirica Ldb) from the upper treeline (2300 m) of the Mongun Taiga mountain massif was used for building up a 2367-year Mongun tree-ring chronology. The chronology is consistent with paleoclimatic data and reflects the main changes in the climate of the Northern Hemisphere over the last two millennia: the cooling of the 6th century, "Medieval warming," "Little Ice Age," and the current warming. The calculation of the response function between the chronology and data from weather stations made it possible to reconstruct the variability of air temperatures in June and July for 2000 years. The chronology contains the climate signal of regional scale and is suitable for dating archaeological wood, that is, for determining the calendar time of building the monuments in the Altai-Sayan region. В© 2012, Siberian Branch of Russian Academy of Sciences, Institute of Archaeology and Ethnography of the Siberian Branch of the Russian Academy of Sciences. Published by Elsevier B.V. All rights reserved.

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Держатели документа:
Siberian Federal University, Svobodny Pr. 79, Krasnoyarsk 660041, Russian Federation
Tuva State University, Lenina 36, Kyzyl 667000, Russian Federation

Доп.точки доступа:
Myglan, V.S.; Oidupaa, O.Ch.; Vaganov, E.A.

/ U. Buntgen [et al.] // J. Ecol. - 2015. - Vol. 103, Is. 2. - P489-501, DOI 10.1111/1365-2745.12361 . - ISSN 0022-0477
Аннотация: Summary: The effects of climate change on Arctic ecosystems can range between various spatiotemporal scales and may include shifts in population distribution, community composition, plant phenology, primary productivity and species biodiversity. The growth rates and age structure of tundra vegetation as well as its response to temperature variation, however, remain poorly understood because high-resolution data are limited in space and time. Anatomical and morphological stem characteristics were recorded to assess the growth behaviour and age structure of 871 dwarf shrubs from 10 species at 30 sites in coastal East Greenland at 70°N. Recruitment pulses were linked with changes in mean annual and summer temperature back to the 19th century, and a literature review was conducted to place our findings in a pan-Arctic context. Low cambial activity translates into estimated average/maximum plant ages of 59/204 years, suggesting relatively small turnover rates and stable community composition. Decade-long changes in the recruitment intensity were found to lag temperature variability by 2 and 6 years during warmer and colder periods, respectively (r = 0.851961-2000 and 1881-1920). Synthesis. Our results reveal a strong temperature dependency of Arctic dwarf shrub reproduction, a high vulnerability of circumpolar tundra ecosystems to climatic changes, and the ability of evaluating historical vegetation dynamics well beyond the northern treeline. The combined wood anatomical and plant ecological approach, considering insights from micro-sections to community assemblages, indicates that model predictions of rapid tundra expansion (i.e. shrub growth) following intense warming might underestimate plant longevity and persistence but overestimate the sensitivity and reaction time of Arctic vegetation. Our results reveal a strong temperature dependency of Arctic dwarf shrub reproduction, a high vulnerability of circumpolar tundra ecosystems to climatic changes, and the ability of evaluating historical vegetation dynamics well beyond the northern treeline. The combined wood anatomical and plant ecological approach, considering insights from microsections to community assemblages, indicates that model predictions of rapid tundra expansion (i.e. shrub growth) following intense warming might underestimate plant longevity and persistence but overestimate the sensitivity and reaction time of Arctic vegetation.

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Держатели документа:
Swiss Federal Research Institute WSL, Zurcherstr 111Birmensdorf, Switzerland
Oeschger Centre for Climate Change Research OCCR, Zahringerstr 25Bern, Switzerland
Global Change Research Centre AS CR, v.v.i., Belidla 986/4aBrno, Czech Republic
Chair of Forest Growth IWW, Freiburg University, Tennenbacherstr 4Freiburg, Germany
Department of Bioscience, University of Aarhus, Ny Munkegade 116Aarhus C, Denmark
Arctic Research Centre, Aarhus University, C.F. Mollers Alle 8, bldg 1110Aarhus C, Denmark
School of GeoSciences, University of Edinburgh, West Mains RoadEdinburgh, United Kingdom
V.N. Sukachev Institute of ForestAkademgorodok, Krasnoyarsk, Russian Federation

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Buntgen, U.; Hellmann, L.; Tegel, W.; Normand, S.; Myers-Smith, I.; Kirdyanov, A.V.; Nievergelt, D.; Schweingruber, F.H.

/ A. V. Taynik [et al.] // Dendrochronologia. - 2016. - Vol. 39: Workshop on Current Status and the Potential of Tree-Ring Research in (JAN 20-21, 2015, Krasnoyarsk, RUSSIA). - P10-16, DOI 10.1016/j.dendro.2015.12.003. - Cited References:38 . - ISSN 1125-7865. - ISSN 1612-0051РУБ Plant Sciences + Forestry + Geography, Physical

Аннотация: Tree-ring research in the Altai-Sayan Mountains so far only considered a limited number of well replicated site chronologies. The dendroecological and palaeoclimatological potential and limitations of large parts of south-central Russia therefore remain rather unexplored. Here, we present a newly updated network of 13 larch (Larix sibirica Ldb.) tree-ring width (TRW) chronologies from mid to higher elevations along a nearly 1000 km west-to-east transect across the greater Altai-Sayan region. All data were sampled between 2009 and 2014. The corresponding site chronologies cover periods from 440 to 860 years. The highest TRW agreement is found between chronologies >= 2200 m asl, whereas the material from lower elevations reveals overall less synchronized interannual to longer-term growth variability. While fluctuations in average June July temperature predominantly contribute to the growth at higher elevations, arid air masses from Mongolia mainly affect TRW formation at lower elevations. Our results are indicative for the dendroclimatological potential of the Altai-Sayan Mountains, where both, variation in summer temperature and hydroclimate can be robustly reconstructed back in time. These findings are valid for a huge region in central Asia where reliable meteorological observations are spatially scarce and temporally restricted to the second half of the 20th century. The development of new high-resolution climate reconstruction over several centuries to millennia will further appear beneficial for timely endeavors at the interface of archaeology, climatology and history. (C) 2015 Elsevier GmbH. All rights reserved.

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Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Sukachev Inst Forest SB RAS, Krasnoyarsk 660036, Russia.
Tuva State Univ, Kyzyl 667000, Republic Of Tuv, Russia.
Swiss Fed Res Inst WSL, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland.

Доп.точки доступа:
Taynik, Anna V.; Barinov, Valentin V.; Oidupaa, Orlan Ch.; Myglan, Vladimir S.; Reinig, Frederick; Buntgen, Ulf

/ V. I. Kharuk [et al.] // J. Mt. Sci. - 2017. - Vol. 14, Is. 3. - P442-452, DOI 10.1007/s11629-016-4286-7 . - ISSN 1672-6316
Аннотация: The phenomenon of tree waves (hedges and ribbons) formation within the alpine ecotone in Altai Mountains and its response to observed air temperature increase was considered. At the upper limit of tree growth Siberian pine (Pinus sibirica) forms hedges on windward slopes and ribbons on the leeward ones. Hedges were formed by prevailing winds and oriented along winds direction. Ribbons were formed by snow blowing and accumulating on the leeward slope and perpendicular to the prevailing winds, as well as to the elevation gradient. Hedges were always linked with microtopography features, whereas ribbons were not. Trees are migrating upward by waves and new ribbons and hedges are forming at or near tree line, whereas at lower elevations ribbons and hedges are being transformed into closed forests. Time series of high-resolution satellite scenes (from 1968 to 2010) indicated an upslope shift in the position ribbons averaged 155±26 m (or 3.7 m yr-1) and crown closure increased (about 35%–90%). The hedges advance was limited by poor regeneration establishment and was negligible. Regeneration within the ribbon zone was approximately 2.5 times (5060 vs 2120 ha-1) higher then within the hedges zone. During the last four decades, Siberian pine in both hedges and ribbons strongly increased its growth increment, and recent tree growth rate for 50 year-old trees was about twice higher than those recorded for similarly-aged trees at the beginning of the 20th century. Hedges and ribbons are phenomena that are widespread within the southern and northern Siberian Mountains. © 2017, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg.

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Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
M.F. Reshetnev Siberian State Aerospace University, Krasnoyarsk, Russian Federation
NASA’s Goddard Space Flight Center, Greenbelt, MD, United States

Доп.точки доступа:
Kharuk, V. I.; Im, S. T.; Dvinskaya, M. L.; Ranson, K. J.; Petrov, I. A.

/ V. I. Kharuk [et al.] // Reg. Environ. Change. - 2018, DOI 10.1007/s10113-018-1401-z . - Article in press. - ISSN 1436-3798
Аннотация: Larch-dominant communities are the most extensive high-latitude forests in Eurasia and are experiencing the strongest impacts from warming temperatures. We analyzed larch (Larix dahurica Turcz) growth index (GI) response to climate change. The studied larch-dominant communities are located within the permafrost zone of Northern Siberia at the northern tree limit (ca. N 67° 38?, E 99° 07?). Methods included dendrochronology, analysis of climate variables, root zone moisture content, and satellite-derived gross (GPP) and net (NPP) primary productivity. It was found that larch response to warming included a period of increased annual growth increment (GI) (from the 1970s to ca. 1995) with a follow on GI decline. Increase in GI correlated with summer air temperature, whereas an observed decrease in GI was caused by water stress (vapor pressure deficit and drought increase). Water stress impact on larch growth in permafrost was not observed before the onset of warming (ca. 1970). Water limitation was also indicated by GI dependence on soil moisture stored during the previous year. Water stress was especially pronounced for stands growing on rocky soils with low water-holding capacity. GPP of larch communities showed an increasing trend, whereas NPP stagnated. A similar pattern of GI response to climate warming has also been observed for Larix sibirica Ledeb, Pinus sibirica Du Tour, and Abies sibirica Ledeb in the forests of southern Siberia. Thus, warming in northern Siberia permafrost zone resulted in an initial increase in larch growth from the 1970s to the mid-1990s. After that time, larch growth increment has decreased. Since ca. 1990, water stress at the beginning of the vegetative period became, along with air temperature, a main factor affecting larch growth within the permafrost zone. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.

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Держатели документа:
Sukachev Institute of Forest, Federal Scientific Center, Russian Academy of Science, Siberian Branch, Academgorodok 50/28, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny str.79, Krasnoyarsk, 660041, Russian Federation
NASA’s Goddard Space Flight Center, Code 618, Greenbelt, MD 20771, United States
Reshetnev Siberian State University of Science and Technology, Krasnoyarsky rabochy str. 31, Krasnoyarsk, 660014, Russian Federation

Доп.точки доступа:
Kharuk, V. I.; Ranson, K. J.; Petrov, I. A.; Dvinskaya, M. L.; Im, S. T.; Golyukov, A. S.

/ E. Babushkina [et al.] // J. Mt. Sci. - 2018. - Vol. 15, Is. 11. - P2378-2397, DOI 10.1007/s11629-018-4974-6 . - ISSN 1672-6316
Аннотация: In mountain ecosystems, plants are sensitive to climate changes, and an entire range of species distribution can be observed in a small area. Therefore, mountains are of great interest for climate-growth relationship analysis. In this study, the Siberian spruce’s (Picea obovata Ledeb.) radial growth and its climatic response were investigated in the Western Sayan Mountains, near the Sayano-Shushenskoe Reservoir. Sampling was performed at three sites along an elevational gradient: at the lower border of the species range, in the middle, and at the treeline. Divergence of growth trends between individual trees was observed at each site, with microsite landscape-soil conditions as the most probable driver of this phenomenon. Cluster analysis of individual tree-ring width series based on inter-serial correlation was carried out, resulting in two sub-set chronologies being developed for each site. These chronologies appear to have substantial differences in their climatic responses, mainly during the cold season. This response was not constant due to regional climatic change and the local influence of the nearby Sayano-Shushenskoe Reservoir. The main response of spruce to growing season conditions has a typical elevational pattern expected in mountains: impact of temperature shifts with elevation from positive to negative, and impact of precipitation shifts in the opposite direction. Chronologies of trees, growing under more severe micro-conditions, are very sensitive to temperature during September-April and to precipitation during October-December, and they record both inter-annual and long-term climatic variation. Consequently, it would be interesting to test if they indicate the Siberian High anticyclone, which is the main driver of these climatic factors. © 2018, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.

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Khakass Technical Institute, Siberian Federal University, Abakan, 655017, Russian Federation
National Park “Shushensky Bor”, Shushenskoe, 662710, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Sukachev Institute of Forest, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Babushkina, E.; Belokopytova, L.; Zhirnova, D.; Barabantsova, A.; Vaganov, E.

/ E. A. Tyutkova, S. R. Loskutov, N. P. Shestakov // Wood Mater. Sci. Eng. - 2019, DOI 10.1080/17480272.2018.1562495 . - Article in press. - ISSN 1748-0272
Аннотация: This paper presents the results of FTIR spectroscopy of the 1988–1998 annual ring early and latewood of Larix gmelinii (Rupr.) Rupr.) found along the polar treeline (Taimyr Peninsula, 70°52?53? N, 102°58?26? E). We analyzed samples of early and latewood to identify absorption bands of groups of wood components, as well as the bands that characterized the interactions among the components. We studied bound water spectral characteristics for wood formed in different years. An analysis of the correlation between the values of spectral absorption bands and mean monthly air temperature and precipitation showed that May-August weather had the greatest influence on the synthesis of the main polymeric components of early and latewood. Air temperature had a considerable effect on polymer composition of cell walls forming in early and latewood, whereas precipitation influenced only earlywood. FTIR spectroscopy is a promising tool to develop information on the biochemical composition of the walls of early and late tracheids of annual rings and on weather and climate influences on cell wall synthesis. © 2018, © 2019 Informa UK Limited, trading as Taylor & Francis Group.

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Держатели документа:
V.N. Sukachev Institute of Forest, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Tyutkova, E. A.; Loskutov, S. R.; Shestakov, N. P.

/ E. Babushkina, D. Zhirnova, L. Belokopytova, E. Vaganov // J. Mt. Sci. - 2020. - Vol. 17, Is. 1. - P16-30, DOI 10.1007/s11629-019-5516-6 . - ISSN 1672-6316
Аннотация: The warming-driven increase of the vegetation season length impacts both net productivity and phenology of plants, changing an annual carbon cycle of terrestrial ecosystems. To evaluate this influence, tree growth along the temperature gradients can be investigated on various organization levels, beginning from detailed climatic records in xylem cells’ number and morphometric parameters. In this study, the Borus Ridge of the Western Sayan Mountains (South Siberia) was considered as a forest area under rapid climate change caused by massive Sayano-Shushenskoe reservoir. Several parameters of the xylem anatomical structure in Siberian spruce (Picea obovata Ledeb.) were derived from normalized tracheidograms of cell radial diameter and cell wall thickness and analyzed during 50 years across elevational gradient (at 520, 960, and 1320 m a.s.l.). On the regional scale, the main warming by 0.42°C per decade occurs during cold period (November–March). Construction of the reservoir accelerated local warming substantially since 1980, when abrupt shift of the cold season temperature by 2.6°C occurred. It led to the vegetation season beginning 3–6 days earlier and ending 4–10 day later with more stable summer heat supply. Two spatial patterns were found in climatic response of maximal cell wall thickness: (1) temperature has maximal impact during 21-day period, and its seasonality shifts with elevation in tune with temperature gradient; (2) response to the date of temperature passing +9.5°C threshold is observed at two higher sites. Climate change yielded significantly bigger early wood spruce tracheids at all sites, but its impact on cell wall deposition process had elevational gradient: maximal wall thickness increased by 7.9% at the treeline, by 18.2% mid-range, and decreased by 4.9% at the lower boundary of spruce growth; normalized total cell wall area increased by 6.2%–6.8% at two higher sites but remained stable at the lowest one. We believe that these patterns are caused by two mechanisms of spruce secondary growth cessation: “emergency” induced by temperature drop versus “regular” one in warmer conditions. Therefore, autumn lengthening of growth season stimulated wood matter accumulation in tracheid walls mainly in cold environment, increasing role of boreal and mountain forests in carbon cycle. © 2020, Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature.

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Держатели документа:
Khakass Technical Institute, Siberian Federal University, Abakan, 655017, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
SukachevInstitute of Forest, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Babushkina, E.; Zhirnova, D.; Belokopytova, L.; Vaganov, E.

/ E. Babushkina, D. Zhirnova, L. Belokopytova, E. Vaganov // J Mt. Sci. - 2020. - Vol. 17, Is. 1. - P16-30, DOI 10.1007/s11629-019-5516-6. - Cited References:82. - Authors would like to thank administration of the National Park "ShushenskyBor" and personally its director Tolmachev V.A. for providing permission and facilitating field work on the park territory. The research reported in this manuscript is funded by the Russian Foundation for Basic Research (Project No. 17-04-00315, data aquisition and wood anatomy analysis) and Russian Science Foundation (Project No 19-18-00145, analysis of climate change and its impact). . - ISSN 1672-6316. - ISSN 1993-0321РУБ Environmental Sciences

Аннотация: The warming-driven increase of the vegetation season length impacts both net productivity and phenology of plants, changing an annual carbon cycle of terrestrial ecosystems. To evaluate this influence, tree growth along the temperature gradients can be investigated on various organization levels, beginning from detailed climatic records in xylem cells' number and morphometric parameters. In this study, the Borus Ridge of the Western Sayan Mountains (South Siberia) was considered as a forest area under rapid climate change caused by massive Sayano-Shushenskoe reservoir. Several parameters of the xylem anatomical structure in Siberian spruce (Picea obovata Ledeb.) were derived from normalized tracheidograms of cell radial diameter and cell wall thickness and analyzed during 50 years across elevational gradient (at 520, 960, and 1320 m a.s.l.). On the regional scale, the main warming by 0.42 degrees C per decade occurs during cold period (November-March). Construction of the reservoir accelerated local warming substantially since 1980, when abrupt shift of the cold season temperature by 2.6 degrees C occurred. It led to the vegetation season beginning 3-6 days earlier and ending 4-10 day later with more stable summer heat supply. Two spatial patterns were found in climatic response of maximal cell wall thickness: (1) temperature has maximal impact during 21-day period, and its seasonality shifts with elevation in tune with temperature gradient; (2) response to the date of temperature passing +9.5 degrees C threshold is observed at two higher sites. Climate change yielded significantly bigger early wood spruce tracheids at all sites, but its impact on cell wall deposition process had elevational gradient: maximal wall thickness increased by 7.9% at the treeline, by 18.2% mid-range, and decreased by 4.9% at the lower boundary of spruce growth; normalized total cell wall area increased by 6.2%-6.8% at two higher sites but remained stable at the lowest one. We believe that these patterns are caused by two mechanisms of spruce secondary growth cessation: "emergency" induced by temperature drop versus "regular" one in warmer conditions. Therefore, autumn lengthening of growth season stimulated wood matter accumulation in tracheid walls mainly in cold environment, increasing role of boreal and mountain forests in carbon cycle.

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Держатели документа:
Siberian Fed Univ, Khakass Tech Inst, Abakan 633017, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, SukachevInst Forest, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Babushkina, Elena; Zhirnova, Dina; Belokopytova, Liliana; Vaganov, Eugene; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [17-04-00315]; Russian Science FoundationRussian Science Foundation (RSF) [19-18-00145]

/ E. A. Tyutkova, S. R. Loskutov, N. P. Shestakov // Wood Mater. Sci. Eng. - 2020. - Vol. 15, Is. 4. - P205-212, DOI 10.1080/17480272.2018.1562495. - Cited References:33 . - ISSN 1748-0272. - ISSN 1748-0280РУБ Materials Science, Paper & Wood

Аннотация: This paper presents the results of FTIR spectroscopy of the 1988-1998 annual ring early and latewood of Larix gmelinii (Rupr.) Rupr.) found along the polar treeline (Taimyr Peninsula, 70 degrees 52' 53 '' N, 102 degrees 58'26 '' E). We analyzed samples of early and latewood to identify absorption bands of groups of wood components, as well as the bands that characterized the interactions among the components. We studied bound water spectral characteristics for wood formed in different years. An analysis of the correlation between the values of spectral absorption bands and mean monthly air temperature and precipitation showed that May-August weather had the greatest influence on the synthesis of the main polymeric components of early and latewood. Air temperature had a considerable effect on polymer composition of cell walls forming in early and latewood, whereas precipitation influenced only earlywood. FTIR spectroscopy is a promising tool to develop information on the biochemical composition of the walls of early and late tracheids of annual rings and on weather and climate influences on cell wall synthesis.

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Держатели документа:
Russian Acad Sci, VN Sukachev Inst Forest, Siberian Branch, Krasnoyarsk, Russia.
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk, Russia.

Доп.точки доступа:
Tyutkova, E. A.; Loskutov, S. R.; Shestakov, N. P.

/ J. J. Camarero, A. Gazol, R. Sanchez-Salguero [et al.] // Global Change Biol. - 2021, DOI 10.1111/gcb.15530 . - Article in press. - ISSN 1354-1013
Аннотация: Climate warming is expected to positively alter upward and poleward treelines which are controlled by low temperature and a short growing season. Despite the importance of treelines as a bioassay of climate change, a global field assessment and posterior forecasting of tree growth at annual scales is lacking. Using annually resolved tree-ring data located across Eurasia and the Americas, we quantified and modeled the relationship between temperature and radial growth at treeline during the 20th century. We then tested whether this temperature–growth association will remain stable during the 21st century using a forward model under two climate scenarios (RCP 4.5 and 8.5). During the 20th century, growth enhancements were common in most sites, and temperature and growth showed positive trends. Interestingly, the relationship between temperature and growth trends was contingent on tree age suggesting biogeographic patterns in treeline growth are contingent on local factors besides climate warming. Simulations forecast temperature–growth decoupling during the 21st century. The growing season at treeline is projected to lengthen and growth rates would increase and become less dependent on temperature rise. These forecasts illustrate how growth may decouple from climate warming in cold regions and near the margins of tree existence. Such projected temperature–growth decoupling could impact ecosystem processes in mountain and polar biomes, with feedbacks on climate warming. © 2021 John Wiley & Sons Ltd

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Держатели документа:
Instituto Pirenaico de Ecologia (IPE-CSIC, Zaragoza, Spain
Depto. de Sistemas Fisicos, Quimicos y Naturales, Universidad Pablo de Olavide, Sevilla, Spain
Centro de Investigacion en Ecosistemas de la Patagonia (CIEP), Coyhaique, Chile
Natural Resources Canada, Pacific Forestry Centre, Victoria, BC, Canada
Departament de Biologia Evolutiva, Ecologia i Ciencies Ambientals, Universitat de Barcelona, Barcelona, Spain
Centre for Ecological Research and Forestry Applications (CREAF), Bellatera, Spain
Centre d'Etudes Nordiques (CEN), Univ. Laval, Quebec, QC, Canada
Dip. TeSAF, Universita degli Studi di Padova, Legnaro (PD), Italy
Department of Botany and Plant Sciences, University of California, Riverside, CA, United States
Nepal Academy of Science and Technology, Kathmandu, Nepal
CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Yunnan, China
Norwegian Institute for Nature Research, Trondheim, Norway
CNRS Cerege, Technopole de L'Environnement Arbois-Mediterranee, Aix en Provence, France
Institute of Ecology and Geography, Siberian Federal University, Krasnoyarsk, Russian Federation
V.N.Sukachev Institute of Forest SB RAS, Federal Research Center ‘Krasnoyarsk Science Center SB RAS’, Krasnoyarsk, Russian Federation
Centre d'Etudes nordiques (CEN), Univ. Quebec a Trois-RivieresQC, Canada
Laboratory of Alpine Ecology, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
Norwegian Biodiversity Information Centre, Trondheim, Norway
Institute of Plant and Animal Ecology, UrB RAS, Ekaterinburg, Russian Federation
EiFAB-iuFOR, University of Valladolid, Soria, Spain
Department of Biological Sciences, University of Bergen, Bergen, Norway
Department of Biology, University of Turku, Turku, Finland
Department of Geography, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
DendroGreif, Institute of Botany and Landscape Ecology, Univ. Greifswald, Greifswald, Germany

Доп.точки доступа:
Camarero, J. J.; Gazol, A.; Sanchez-Salguero, R.; Fajardo, A.; McIntire, E. J.B.; Gutierrez, E.; Batllori, E.; Boudreau, S.; Carrer, M.; Diez, J.; Dufour-Tremblay, G.; Gaire, N. P.; Hofgaard, A.; Jomelli, V.; Kirdyanov, A. V.; Levesque, E.; Liang, E.; Linares, J. C.; Mathisen, I. E.; Moiseev, P. A.; Sanguesa-Barreda, G.; Shrestha, K. B.; Toivonen, J. M.; Tutubalina, O. V.; Wilmking, M.

/ J. Tumajer, J. Kaspar, H. Kuzelova [et al.] // Front. Plant Sci. - 2021. - Vol. 12. - Ст. 613643, DOI 10.3389/fpls.2021.613643 . - ISSN 1664-462X
Аннотация: Significant alterations of cambial activity might be expected due to climate warming, leading to growing season extension and higher growth rates especially in cold-limited forests. However, assessment of climate-change-driven trends in intra-annual wood formation suffers from the lack of direct observations with a timespan exceeding a few years. We used the Vaganov-Shashkin process-based model to: (i) simulate daily resolved numbers of cambial and differentiating cells; and (ii) develop chronologies of the onset and termination of specific phases of cambial phenology during 1961–2017. We also determined the dominant climatic factor limiting cambial activity for each day. To asses intra-annual model validity, we used 8 years of direct xylogenesis monitoring from the treeline region of the Krkonose Mts. (Czechia). The model exhibits high validity in case of spring phenological phases and a seasonal dynamics of tracheid production, but its precision declines for estimates of autumn phenological phases and growing season duration. The simulations reveal an increasing trend in the number of tracheids produced by cambium each year by 0.42 cells/year. Spring phenological phases (onset of cambial cell growth and tracheid enlargement) show significant shifts toward earlier occurrence in the year (for 0.28–0.34 days/year). In addition, there is a significant increase in simulated growth rates during entire growing season associated with the intra-annual redistribution of the dominant climatic controls over cambial activity. Results suggest that higher growth rates at treeline are driven by (i) temperature-stimulated intensification of spring cambial kinetics, and (ii) decoupling of summer growth rates from the limiting effect of low summer temperature due to higher frequency of climatically optimal days. Our results highlight that the cambial kinetics stimulation by increasing spring and summer temperatures and shifting spring phenology determine the recent growth trends of treeline ecosystems. Redistribution of individual climatic factors controlling cambial activity during the growing season questions the temporal stability of climatic signal of cold forest chronologies under ongoing climate change. © Copyright © 2021 Tumajer, Kaspar, Kuzelova, Shishov, Tychkov, Popkova, Vaganov and Treml.

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Держатели документа:
Department of Physical Geography and Geoecology, Faculty of Science, Charles University, Prague, Czech Republic
Institute of Botany and Landscape Ecology, University of Greifswald, Greifswald, Germany
Laboratory for Integral Studies of Forest Dynamics of Eurasia, Siberian Federal University, Krasnoyarsk, Russian Federation
Sukachev Institute of Forest SB RAS, Krasnoyarsk, Russian Federation
Rectorate, Siberian Federal University, Krasnoyarsk, Russian Federation
Center for Forest Ecology and Productivity of the Russian Academy of Sciences, Moscow, Russian Federation

Доп.точки доступа:
Tumajer, J.; Kaspar, J.; Kuzelova, H.; Shishov, V. V.; Tychkov, I. I.; Popkova, M. I.; Vaganov, E. A.; Treml, V.

/ J. J. Camarero, A. Gazol, R. Sanchez-Salguero [et al.] // Glob. Change Biol. - 2021, DOI 10.1111/gcb.15530. - Cited References:64. - We thank all people who participated in fieldwork and sample processing. This work was supported by the Spanish projects AMB95-0160, REN2002-04268-C02, and CGL2015-69186-C2-260 1-R to E.G., E.B., and J.J.C., respectively, and the Chilean FONDECYT project nos. 1120171 and 1160329 to A.F. A.V.K. was supported by the Russian Ministry of Science and Higher Education project #FSRZ-2020-0010. A.H., I.E.M., and K.B.S., were supported by The Research Council of Norway, project no. 176065/S30 and 190153/V10. . - Article in press. - ISSN 1354-1013. - ISSN 1365-2486РУБ Biodiversity Conservation + Ecology + Environmental Sciences

Аннотация: Climate warming is expected to positively alter upward and poleward treelines which are controlled by low temperature and a short growing season. Despite the importance of treelines as a bioassay of climate change, a global field assessment and posterior forecasting of tree growth at annual scales is lacking. Using annually resolved tree-ring data located across Eurasia and the Americas, we quantified and modeled the relationship between temperature and radial growth at treeline during the 20th century. We then tested whether this temperature-growth association will remain stable during the 21st century using a forward model under two climate scenarios (RCP 4.5 and 8.5). During the 20th century, growth enhancements were common in most sites, and temperature and growth showed positive trends. Interestingly, the relationship between temperature and growth trends was contingent on tree age suggesting biogeographic patterns in treeline growth are contingent on local factors besides climate warming. Simulations forecast temperature-growth decoupling during the 21st century. The growing season at treeline is projected to lengthen and growth rates would increase and become less dependent on temperature rise. These forecasts illustrate how growth may decouple from climate warming in cold regions and near the margins of tree existence. Such projected temperature-growth decoupling could impact ecosystem processes in mountain and polar biomes, with feedbacks on climate warming.

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Держатели документа:
CSIC, Inst Pirena Ecol IPE, Zaragoza 50080, Spain.
Univ Pablo de Olavide, Dept Sistemas Fis Quim & Nat, Seville, Spain.
Ctr Invest Ecosistemas Patagonia CIEP, Coyhaique, Chile.
Nat Resources Canada, Pacific Forestry Ctr, Victoria, BC, Canada.
Univ Barcelona, Dept Biol Evolut Ecol & Ciencies Ambientals, Barcelona, Spain.
Ctr Ecol Res & Forestry Applicat CREAF, Bellaterra, Spain.
Univ Laval, Ctr Etud Nord CEN, Quebec City, PQ, Canada.
Univ Padua, Dip TeSAF, Legnaro, PD, Italy.
Univ Calif Riverside, Dept Bot & Plant Sci, Riverside, CA 92521 USA.
Nepal Acad Sci & Technol, Kathmandu, Nepal.
Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Kunming, Yunnan, Peoples R China.
Norwegian Inst Nat Res, Trondheim, Norway.
CNRS Cerege, Technopole Environm Arbois Mediterranee, Aix En Provence, France.
Siberian Fed Univ, Inst Ecol & Geog, Krasnoyarsk, Russia.
Krasnoyarsk Sci Ctr SB RAS, VN Sukachev Inst Forest SB RAS, Fed Res Ctr, Krasnoyarsk, Russia.
Univ Quebec Trois Rivieres, Ctr Etud Nord CEN, Trois Rivieres, PQ, Canada.
Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Alpine Ecol, Beijing, Peoples R China.
Norwegian Biodivers Informat Ctr, Trondheim, Norway.
UrB RAS, Inst Plant & Anim Ecol, Ekaterinburg, Russia.
Univ Valladolid, EiFAB iuFOR, Soria, Spain.
Univ Bergen, Dept Biol Sci, Bergen, Norway.
Univ Turku, Dept Biol, Turku, Finland.
Moscow MV Lomonosov State Univ, Dept Geog, Moscow, Russia.
Ernst Moritz Arndt Univ Greifswald, Inst Bot & Landscape Ecol, DendroGreif, Greifswald, Germany.

Доп.точки доступа:
Camarero, Jesus Julio; Gazol, Antonio; Sanchez-Salguero, Raul; Fajardo, Alex; McIntire, Eliot J. B.; Gutierrez, Emilia; Batllori, Enric; Boudreau, Stephane; Carrer, Marco; Diez, Jeff; Dufour-Tremblay, Genevieve; Gaire, Narayan P.; Hofgaard, Annika; Jomelli, Vincent; Kirdyanov, Alexander, V; Levesque, Esther; Liang, Eryuan; Linares, I. E.; Mathisen, Ingrid E.; Moiseev, Pavel A.; Sanguesa-Barreda, Gabriel; Shrestha, Krishna B.; Toivonen, Johanna M.; Tutubalina, Olga, V; Wilmking, Martin; Camarero, J. Julio; Spanish projects [AMB95-0160, REN2002-04268-C02, CGL2015-69186-C2-260 1-R]; Chilean FONDECYTComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)CONICYT FONDECYT [1120171, 1160329]; Russian Ministry of Science and Higher Education [FSRZ-2020-0010]; Research Council of NorwayResearch Council of Norway [176065/S30, 190153/V10]